Brake shoe



Oct. 22, 1929. v. BENDIX BRAKE SHOE Filed May 21, 1926 'IIIIIIIIIIIIIIIQ INVENTOR VINC L ENT BENDIX ATTORNEY Patented Oct. 22, 1929 UNITED STATES PATENT OFFICE VINCENT BENDIX, OF CHICAGO, ILLINOIS, ASSIGNOR TO BENDIX BRAKE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS BRAKE SHOE Application and May 21,

This invention relates to brake shoes and is illustrated as embodied in an arcuate and substantially rigid shoe suitable for use in an internal expanding automobile brake. An object of the invention is to provide in an inexpensive manner a very strong shoe in which there is a stifiening web separate from the outer cylindrical part or band of the shoe and in which they are connected by means serving to brace them against each other. In one desirable arrangement there is a part, preferably separate from the stiffening web, engaging at one edge the inner face of the outer cylindrical part and at its inner edge engaging the stiffening web between its edges, thus forming a brace which gives with the stiffening web and the outer band a very strong trussed section of triangular form.

Other features of the invention relate to details of the mounting of the bracing part and to other novel and desirable constructions which will be apparent from the following description of several illustrative embodiments shown in the accompanying drawings, in which:

Figure 1 is a view of the novel shoe in side elevation;

Figure 2 is a section through the shoe on the line 22 of Figure 1;

Figure 3 is a section, corresponding to Figure 1, of a modified shoe;

F'gure 4 is a section, corresponding to Figures 2 and 3, but showing a third modification;

Figure 5 is a section, corresponding to Figures 2-4, but showing a fourth modification; and

Figure 6 is a partial inside shoe of Figure 5.

The shoe shown in Figures 1 and 2 includes an outer' cylindrical part or band 10, which may be provided with any suitable brake lining 12, and between the edges of which there is arranged a stiffening member 14 engaging at its outer ed e the inner face of the part 10, preferably su stantially in the center, and preferably welded directly to the inner face of the part 10. The bracing means shown in Figures 1 and 2 includes a stamping 16 approximately L-shaped in cross-section and one plan view of the 1926. Serial N0. 110,632.

bracing member 18 having flanges at its edges welded or otherwise secured respectively to the stiffening member 14 and to the inner face of part 10, and the central part of which bridges diagonally from member 14 to part 10 to form a trussed or inclined brace which, with the member 14 and part 10, forms a very strong shoe portion of triangular section. The modification shown in Figures 1 and 2, as heretofore described, is not claimed herein, the same forming the subject-matter of my divisional application N 0. 388,875, filed August 28, 1929.

At the anchored end of the shoe, the stiffening member 14 projects as an anchoring arm 20 offset within the curve 22 of the shoe to clear the end of the friction face of the ad- 'acent shoe and formed with a suitable opening 24 to be pivotally mounted on an anchor of any desired form. The stiffening web of the shoe may be formed with an opening 26 to allow for the passage of a post carrying a plate bridging across the adjacent ends of two of the shoes and positioning them laterally and also with an opening 28 for the anchor of a shoe overlapping the anchored end of the shoe shown in the drawing. A more complete disclosure of a brake of this character showing the use of the openings 26 and 28 will be found in ap 'ilication N 0. 88,201, filed Februar 15, 1926.

The shoe s iown in Figure 3 differs from the one just described in that the stiffening member 114 is deflected and continued as an inclined integral bracing portion 118 welded or otherwise secured at its outer edge directly to the inner face of the part 10. The other bracing member in this case is a separate member 116 welded at its inner edge to the stiffening member 114 approximately at the oint where the ortion 118 is deflected t lerefrom and welt ed at its outer edge to the inner face of part 10. It will be seen that parts 10, and 116, and 118, cooperate 50 .brace between the cylindrical part and the to form a shoe portion of triangular section which has great strength.

The shoe shown in Figure 4 differs from the one in Figure 3 in that bracing member 216, corresponding to bracing member 116, is seated and welded at its inner edge in a bead 26 at the junction of the portion 218 with the body of the stiffening member while the bracing member 216 and the inclined portion 218 of the stiffening member 214 are seated and welded at their outer edges in the angle between the outer part 210 and beads 28 rolled or otherwise formed to project inwardly from the outer part 210 just inside its opposite edges.

The shoe shown in F i ures 5 and S'differs from the ones described above in that the stiffening member 314 is formed with integral tongues along its outer edge laterally bent in opposite directions to form staggered series 318 and 316 of tongues engaging the inner face of part 10 at acute angles and welded orotherwise secured thereto.

lVhile several illustrative embodiments of the invention have been described in detail, it is not my intention to limit its scope to those particular embodiments or otherwise than by the terms of the appended claims.

I claim:

1. A brake shoe comprising, in combination, a cylindrical outer part substantially rectangular in cross-section, a stiffening member separate from said outer part and secured thereto along the outer edge of said member and arranged substantially centrally of the shoe, and a part diverging from the stiffening member between its edges and secured to the cylindrical part at one side of the center of the shoe to form a trussed brace between the cylindrical part and the stiffening member.

2. A brake shoe comprising, in combination, a c lindrical outer part substantially rcctangu ar in cross-section, a stiffening member separate from said outer part and secured thereto along the outer edge of said member and arranged substantially centrally-of the shoe, and a separate part having one edge engaging the stiffening member between its edges and secured to the c lindrical part of one side of the center of t 1e shoe to form a stiffening member.

3. A brake shoe comprising, in combination, a cylindrical outer part, an arcuate stiffening member having its outer edge engaging the inner face of the outer part, and a separate brace member engaging at its outer edge the inner face of the outer member and engaging at its inner edge the stifiening member between its edges.

4. A brake shoe comprising, in combination, a cylindrical outer part, an arcuate stifl'enin member having its outer edge engaging the inner face of the outerpart, and a. separate brace member engaging at its outer edge the inner Iace OI the outer member and engaging at its inner edge the stiffening member between its edges, the outer part and the stiffening member and the brace member forming the sides of a trussed shoe section of triangular cross-section.

5. A brake shoe having a cylindrical outer part with a pair of beads projecting inwardly just inside and parallel to its edges, a stifiening member seated at its outer edge in the angle between one of the beads and the inner face of the shoe and formed with its body portion at the center of the shoe and having a bead at the angle between its body portion and outer portion,-and a separate part seated at its outer edge in the angle between the other of said pair of beads and the inner face of said outer portion and with its inner edge seated in the bead of the stiffening member.

6. A brake shoe having a cylindrical outer part with a pair of beads projecting inwardly just inside and parallel to its edges, a stiffening member seated at its outer edge in the angle between one of the beads and the inner face of the shoe and having a bead between its edges, and a separate part seated at its outer edge in the angle between the other of said pair of beads and the inner face of said outer portion and with its inner edge seated in the bead of the stiffening member.

In testimony whereof, I have hereunto signed my name.

VINCENT BENDIX. 

